Home / 18,747.60-28,123.32-6,434

Finding the Fourth Proportional to 18,747.60, 28,123.32 and 6,434

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Solution

The fourth proportional to 18,747.60, 28,123.32 and 6,434 is: 9,651.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.60 : 28,123.32 = 6,434 : x
  2. Step 2: Convert to fraction form
    18,747.60/28,123.32 = 6,434/x
  3. Step 3: Cross multiply
    18,747.60x = 28,123.32 × 6,434
  4. Step 4: Simplify right side
    18,747.60x = 180,945,440.88
  5. Step 5: Solve for x
    x = 180,945,440.88/18,747.60
  6. Step 6: Final answer
    x = 9,651.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.